The Nuclear Regulatory Commission has filed a complaint against the manufacturer of casks used at the closed Vermont Yankee nuclear power plant.
NRC spokesman Neil Sheehan tells the Brattleboro Reformer that Holtec International adopted a new design for its steel and concrete casks without a written evaluation, violating federal safety regulations. Officials say the company made changes after it discovered a loose bolt at San Onofre nuclear power plant in California.
Holtec said Friday that the NRC has confirmed the safety of the canisters. It says it doesn't agree with the severity level of the apparent violation.
The casks are used at other nuclear plants to store spent fuel.
Last month, regulators approved the sale of Vermont Yankee to NorthStar. The company plans to start decommissioning the plant no later than 2021.
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